High visibility round marker for spotting with UV lights in silk-out conditions.

• Width: 5.5cm (2.2) in diameter
• Technical scuba diving directional line round marker.
• Mark your line with these round shaped markers for entry and exit of cave or wreck.
• Lightweight, compact, durable and corrosion-resistant.
• Easy to install and use.
• Great replacement accessories for scuba diving, cave wreck diving and other technical diving applications.